Supplemental Figure 2. Affinity purification of MIX-interacting proteins. (A) MIX::TAP protein is expressed and can be affinity purified from transfected parasites lysates. Protein was eluted from IgG-sepharose beads incubated with either MIX::TAP parasite lysate or wild-type parasite lysate and subjected to SDS-PAGE and western blotting, probing with rabbit polyclonal anti-MIX antibodies. (B) Identification of MIX-interacting proteins by mass spectroscopy. Proteins eluted from IgG-sepharose beads from parallel MIX::TAP and WT purifications were run on a 412% Bis-Tris gel and the band indicated by the arrow was cut from the gel and subjected to mass-spectroscopy to identify possible MIX-interacting proteins.